Well, as far as their presses.. Frankly I don't think there's any better. The 650 is an EXCELLENT machine. It simply "just works" and is a great machine.
As for components (I'm assuming you mean scales, dies, etc.. and not primers and powder).. Again, Dillon stuff is top notch.
While there's certainly stuff out there that is high quality that is not made by Dillon... You'd be hard pressed to find something with Dillon's name on it, that is not high quality.
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